oneboxing: change to use [[[triple square brackets]]]

This is because for some reason when extending Parsedown to add a new 
block type for [[internal links]] to detect oneboxing means that it's 
impossible to  tell if we're inside e.g. a bulleted list or not :-/

Changelog.md

@@ -8,7 +8,7 @@ This file holds the changelog for Pepperminty Wiki. This is the master list of t
  - Added support for embedding external YouTube and Vimeo videos (e.g. `![alt text](https://youtube.com/watch?v=pID0xQ2qnrQ)`)
      - If you know of a cool service that should be supported, please open an issue - YouTube and Vimeo were just the only 2 I could think of
      - Known issue: specifying the size (i.e. with ` | 500x400` inside the brackets `()` there) doesn't currently work because iframes are weird
- - Added [oneboxing](https://meta.discourse.org/t/rich-link-previews-with-onebox/98088): rich previews for internal links. If an internal link is on it's own with nothing before or after it on a line, then it'll be turned into a onebox
+ - Added [oneboxing](https://meta.discourse.org/t/rich-link-previews-with-onebox/98088): rich previews for internal links. If an internal link with 3 square brackets (e.g. `[[[example]]]`) is on it's own with nothing before or after it on a line, then it'll be turned into a onebox
      - 2 new settings have also been added to control it: `parser_onebox_enabled` and `parser_onebox_preview_length`
      - TODO: Update the dynamic help page for this.
 

modules/parser-parsedown.php

@@ -5,7 +5,7 @@
 
 register_module([
 	"name" => "Parsedown",
-	"version" => "0.12",
+	"version" => "0.12.1",
 	"author" => "Emanuil Rusev & Starbeamrainbowlabs",
 	"description" => "An upgraded (now default!) parser based on Emanuil Rusev's Parsedown Extra PHP library (https://github.com/erusev/parsedown-extra), which is licensed MIT. Please be careful, as this module adds some weight to your installation.",
 	"extra_data" => [
@@ -1573,12 +1573,21 @@ class PeppermintParsedown extends ParsedownExtra
 		return $result;
 	}
 	
-	
-	protected function blockOneBox($fragment) {
+	/*
+	 *  ██████  ███    ██ ███████ ██████   ██████  ██   ██ ██ ███    ██  ██████
+	 * ██    ██ ████   ██ ██      ██   ██ ██    ██  ██ ██  ██ ████   ██ ██
+	 * ██    ██ ██ ██  ██ █████   ██████  ██    ██   ███   ██ ██ ██  ██ ██   ███
+	 * ██    ██ ██  ██ ██ ██      ██   ██ ██    ██  ██ ██  ██ ██  ██ ██ ██    ██
+	 *  ██████  ██   ████ ███████ ██████   ██████  ██   ██ ██ ██   ████  ██████
+	 */
+	protected function blockOneBox($fragment, $current_block) {
 		global $env, $settings, $pageindex;
+		error_log("FRAGMENT ".var_export($fragment, true));
+		error_log("CBLOCK ".var_export($current_block, true));
+		error_log("***********");
 		
 		if($fragment["indent"] > 0 || !$settings->parser_onebox_enabled) return;
-		if(preg_match('/^\[\[([^\]]*?)\]\]$/u', $fragment["text"], $matches) !== 1)
+		if(preg_match('/^\[\[\[([^\]]*?)\]\]\]$/u', $fragment["text"], $matches) !== 1)
 			return;
 		
 		// 1: Parse parameters out